Scaffold.



No. 788,171. PATENTED APR. 25, 1905. 0. SCHWERIN.

SCAIIOLD.

APPLICATION FILED AUG. 4, 1904.

IIIIIIIIIHHHMI @timone/M v curing the ladder.

UNITED STATES Patented April 25, 1905.

PATENT OFFICE.

SCAFFOLD.

SPECIFICATION forming part of Letters Patent No. 788,171, dated April25, 1905. Application filed August 4, 1904:. Serial No. 219,577-

1'0 cl/ZZ whom, t nuty concern,.-

Beit known that I, OswALD SCHWERIN, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented new and useful Improvements in Scafolds, of which the followingis a specification. l

My invention relates to'scaifolds, and more particularly aladder-scaffold; and it consists in certain novel features ofconstruction hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a front elevation of thescaffold, and Fig. 2 is a side elevation thereof. Fig. 3 is a sideelevation with the platform folded. Fig. 4L is a bottom plan view.

Referring specifically to the drawings, 6 denotes a ladder the stiles ofwhich are formed at their upper ends into hooks 7, whereby the ladder ishung or suspended. On the outer edges of the stiles are hooks 8 forfurther se- A frame 9 is slidably mounted on the Stiles, to which framea platform 10 is hinged, as at 11, said platform being provided with arailing` 12. A screw 13 is threaded through a block 14, extendingbetween the stiles near the bottom of theladder, and by turning saidscrew the frame can be slid up and down on the Stiles and the platform10 thus adjusted to the height desired by the operator. The upper end ofthe screw has a hand-wheel 15 for turning it, and the screw extendsloosely through a tubular bearing 16, formed on the frame 9. A collar orsleeve 17 on the screw abuts against the bearing at the bottom thereof,so that when the screw is turned the frame 9 will travel with itaccording to the direction in which the screw is turned.

Under the platform putlogs 18 are supported on cleats 19 and have attheir outer ends rollers 20. The putlogs are adjustable back and forthby means of a screw 21, which is threaded through a block 22 under theplatform. The screw is supported in bearings 23 on the putlogs and has ahand-wheel 24 for turning it.

The platform is braced on each side by an arm hinged to the frame at itslower end, as at 26, the upper end of the arm being fitted into aslotted plate 27, extending from the sides of the platform.

When not in use, the platform can be conveniently folded up, as shown inFig. 3.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

A scaold comprising a ladder; a frame slidably mounted thereon andcarrying a foldable platform; putlogs secured under the platform andextensible outwardly therefrom and having rollers at their outer ends; ascrew for adjusting said putlogs; and a screw for operating the slidingframe to raise and lower the same.

In testimony whereof I have signed my name to this specification in thepresence of two su bscribing witnesses.

OSI/VALD SCHl/VERIN.

Witnesses:

ELSA PRosoHE, H. G. BATCHELOR.

